The Ninth Core
Plane-Phyrexia
When ever a planar die is rolled, its controller looses 1 life.
- Whenever you roll , proliferate, proliferate, than proliferate again.

I dont think planes have a rarity so I put it on special.

A wide area of choice and possibilities. Maybe too wide for my liking, but I'll manage.
I swear I remember doing a Commander themed one recently, but I think I'll do that one... Dunno.

Bringer of Chaos
Legendary Creature - Avatar
Sacrifice a Plains: Target player gains 8 life. Any player may activate this ability.
Sacrifice an Island: Target player draws two cards. Any player may activate this ability.
Sacrifice a Swamp: All creatures get -2/-2 until end of turn. Any player may activate this ability.
Sacrifice a Mountain: Bringer of Chaos deals 3 damage to target creature or player. Any player may activate this ability.
Sacrifice a Forest: Destroy target nonland, noncreature permanent. Any player may activate this ability.
7/5

For multiplayer misfits. This could be fun to use, however I don't know if it would be useful, seeing as rainbow decks don't have too much basic land. What the hell...

I think it just might be a typo, A_F. Read carefully, word for word.

Edit: After looking at your post and the admin log, I'm not so sure. Maybe you had it right all along and NKoC re-typed it incorrectly. My bad.

The Great Discontinuity
Plane - Tidestar
When you planeswalk away from The Great Discontinuity, the ability of the next plane you planeswalk to triggers when you planeswalk there.
Whenever you roll , you get an emblem with "Rolling the planar die costs you less."

Thordran Boughdrum
Character
If you spend more green mana then white mana put 1 life counter on target creature, If you spend more white mana then green mana gain 1 life.
The union of a human and elf creates a person that often has a heritage of neither. These unfortunates become loners and outcasts, but some of the greatest heroes are born.
Hand +2
Life +2

Kanpi Reaches
Plane - Murkvam
Whenever a creature is put into a graveyard from the battlefield, its controller puts a 3/3 green Fungust Beast creature token onto the battlefield.
Whenever you roll , you gain an emblem with “Creatures you control have molder.”

Molder is a triggered keyword ability.

Molder (At the beginning of your upkeep, you may sacrifice a permanent. If you do, return target permanent card from your graveyard to your hand.)

Murkvam is an underground cave world I'm designing. One of the regions is the green aligned Kanpi Reaches - basically, it's a great forest of mold and fungi with enourmous, blind fungal beasts between mushroom trees, dragging their way through the toadstools. Mechanically, everything in that world is recycled slowly, and everything actually acts like a Nature's Spiral, since it's mold growing and feeding on mold.

Also, yes, each instance stacks.

Exile
Plane-Exile (planes are always common)
At the beginning of your upkeep, exile target permanent or return target exiled permanent to the battlefield.

When you roll "Chaos Symbol", return target exiled permanent on top of its owner´s library.

Zhaw, Commander of Mages (5)
Legendary Creature - Soilder

Whenever a blue spell is played, put a 1/1 blue wizard token into play.
Whenever a white spell is played, you may gain X life where X is equal to half
the number of wizards you control rounded up.

"Come my fellow mages. They shall fall before the great harvest." - Zhaw,
Commander of Mages

4/4

Choosing the planechase optoin

Augustin III Memorial Library
Plane - Ravnica
Each card in each hand has cycling (, Discard this card: Draw a card)
Whenever you roll , search your library for a card and put it into your hand, then shuffle your library.

planechase + multiplayer option activated:

Rakdos sacrifical pits
Plane - Ravinca
at the beginning of your upkeep, each other player sacrifices a permanent, then you may put a permanent card from a graveyard onto the battlefield under your control.
: put all permanents in all graveyards onto the battlefield under your control.

Gologos, Warlord of Hatespire
Legendary Creature - Ogre Barbarian
Gologos, Warlord of Hatespire attacks each turn if able.
Dominion - If you control more permanents than any other player, each creature you control gets +2/+2 and has trample and haste.
Graveboon - As long as Gologos, Warlord of hatespire is in your graveyard, creatures you control attack each turn if able.
"On my own, I have left trails of broken bodies in my wake. Without me, you have ruined many cities. But together, warriors of Hatespire, we shall conquer and burn all the world!"
4/5

Damon, the Storm
Legendary Creature - Djinn
Flying, haste, vigilance
If a source would deal damage to another creature, it deals double that damage instead.
: Damon, the Storm deals 2 damage to target creature and 1 damage to another target creature.
4/4

Grove of Crimson
Plane-Pyrulea
Whenever a player taps a land for mana, Grove of Crimson deals 1 damage to that player.
Each land you control has ": You gain 1 life."
: Put a blaze counter on target land without a blaze counter on it. For as long as that land has a blaze counter on it, it has "At the beginning of your upkeep, this land deals 1 damage to you." (The land continues to burn after you planeswalk away from Grove of Crimson.)

This plane is brought to you by Grove of the Burnwillows (flavor), Manabarbs, and Obsidian Fireheart.
EDIT: Ah shoot... just looked up the promo planes and saw that one had the manabarbs effect :/
Oh well, I'm sticking to my entry

Thieves' Market
Plane - Mercadia
When you planeswalk to Thieves' Market or at the beginning of your upkeep, you may have target player discard a card and you draw a card.
:Whenever you roll , Exile all nontoken permanents. Starting with you, each player chooses one of the exiled cards and puts it onto the battlefield tapped under his or her control. Repeat this process until all cards exiled this way have been chosen.

Since no one's doing Schemes, I guess I'll do one.

You Are Too Late To Stop Me
Scheme
When you set this scheme in motion, until the beginning of your next upkeep step, spells you cast and abilities you play can’t be countered.
“The first part of my Great Work is complete! How can you hope to stand against me now?”

My Entry:

Awaken the Executioner
Scheme
When you set this scheme in motion, put a 1/1 white and black human warrior onto the battlefield. It has ": Destroy target creature."
"Nothing can prevent my rise to power now."

Lorekeeper of Durmshallow
Creature - Merfolk Wizard
Defender
At the beginning of each player's upkeep, that player draws a card for each player in the game then discards that many cards.
"I have forgotten more than most humans, yet I have not yet forgotten to forget to remember."
2/5

COMMENTS: EDH, obviously; fairly strong but useful card filtering. The art would hopefully reflect an ancient librarian-scholar so buried in his books he can't even get up to fight.

Last call for entrants. Entries will be accepted for one more hour (and 15 minutes. )

EDIT: Thanks to all the entrants! This week's contest is now closed.